oaken you'll be very pleased, for the past like 4 days I've been felguard spec (got bored, respecc'd). currently though I've only tested it in kara and za though from them two alone i was incredably surprised at the damage it does and tonight I should be testing it in mh/bt to see if it really does match up to my old 0/21/40 spec as well as the rest of our imba dps (shall be comparing wws stats over the next week to prior raids).
so yeah, pretty curious as to why it does so much more damage than I'd expect... currently the only idea I've come up with is that the dot damage + damage from felguard during the times when I would be lifetapping/bandaging/potting/moving etc... makes up for alot of the difference from the pure 0/21/40 nuke spec. basically even though the theorycrafting shows dest to seriously outdps demo, it really is surprising how much damage it does... though T5 2set is far from needed I've found, though the trinket is a bigger help than I originally thought.
so yeah, after this week there may be another demo lock in da house ^^ lol